What are the guideline recommendations for pharmacological treatment of chronic insomnia disorder in adults?


Recommendations for pharmacotherapy for chronic insomnia disorder in adults:

  • To decide whether to add pharmacological therapy in adults with chronic insomnia disorder who remain non-responsive to cognitive behavioural therapy for insomnia (CBT-I) alone, a shared decision-making approach should be used to discuss the benefits, harms, and costs of short-term medication use. Improved sleep outcomes, including sleep onset latency and total sleep time, improved global outcomes in the general population and older adults are the advantages of pharmacotherapy.[1]
  • The U.S. Food and Drug Administration (FDA) approved several drugs for insomnia for short-term use (4-5 weeks), and patients should not continue using the drugs for extended periods. The patient should resume using the tools acquired during CBT-I following drug treatment. If the remission does not occur within 7-10 days of treatment, patients should be re-evaluated. Before continuing with drugs, secondary causes of insomnia (e.g., depression, substance misuse, dyspnoea, or restless legs syndrome) should be evaluated.
  • Adults should be treated with Suvorexant and Doxepin for sleep maintenance insomnia.
  • Eszopiclone, Zolpidem, and Temazepam (15 mg) should be used to treat sleep onset and sleep maintenance insomnia.
  • Sleep onset insomnia should be treated with Zaleplon, Triazolam (0.25 mg), and Ramelteon.[2]

Drugs used for the treatment of chronic insomnia:

Drug nameDosage (mg)
Nonbenzodiazepine sedative ‘Z-drug’ hypnotics 
Eszopiclone1-3
Zaleplon5-10
Zolpidem5-10
Zolpidem, continuous release6.25-12.5
Zolpidem, sublingual1.75/3.5
Zolpidem, oral spray5-10
Melatonin agonists 
Melatonin1
Ramelteon8
Antidepressants 
Amitriptyline (Off-label)25-150
Doxepin3-6
Mirtazapine (Off-label)7.5-15
Nortriptyline25-150
Trazodone (Off-label)50-100
Orexin receptor antagonist 
Suvorexant (not recommended in patients with severe hepatic impairment).5-20
Lemborexant (not recommended in patients with severe hepatic impairment).5, 10
Daridorexant10, 25, 50
Antihistamines 
Diphenhydramine (Off-label)25-50
Doxylamine (Off-label)25-50
Hydroxyzine50-100
Antipsychotics 
Olanzapine2.5-20
Quetiapine50-400
Risperidone0.25-6
Anticonvulsants 
Gabapentin300-600
Pregabalin50-3003

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